Production of vermin killers



Feb. 6, 1940. q- 2,189,730

PRODUCTION OF VERMIN KILLERS Filed Sept. 21, 1937 INVENTOR:

ALFRED ESCH B Y v M W;

Patented Feb. 6, 194-0 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a process of producing vermin killers and anapparatus for evaporating such agents.

As is well known, sulphur substances in the form of candles, threads orpackings are chiefly used for killing vermin, although sulphur vapoursare an imperfect agent for this purpose since they are heavier than airand therefore remain in the lower part of the room to be treated.Consequently, the vermin in the upper part of the room to be treated,which part is the preferred place for vermin, remain undestroyed andcontinue to exist. Moreover vapours of sulphur adhere to the rooms andobjects for a considerable length of time after the treatment and leavedeposits which produce defects and soiled spots. Another importantdefect consists in that it is necessary to produce the gas or to effectthe gasification by means of vessels or packings ofa predetermined sizeput into the room to be treated in a provisional manner. Thus in mostcasesv the quantity is not adapted to the size of the room to betreated.

It is the object of this invention to obviate these drawbacks by meansof a novel process of producing a vermin destroyer and a novel apparatusor device which is suitable for shipping, dosing and evaporating thenovel vermin destroyer.

According to this invention 1000 parts of flowers of sulphur orsublimated sulphur are mixed in a molten condition with parts ofpulverized sepia. Thisproduct is put into an evaporating vesselcontaining wicks which have been impregnated in hard or solid spirit,and are of a curved, for instance spiral, zigzag, wave or U-form. Theevaporating vessel consists of a flat hollow box of a form which issuitable for sale. The bottom or cover of the box consists of severalparts which can be bent over after removal of a cover fixed thereon byan adhesive. contents of the box is thus laid open and the bent-overportions serve as a support for the vessel.

Another feature of the invention consists in that a plurality ofcarriers (plates, vesselsor the like) carrying each a predeterminedamount or close of the vermin killer are positioned in the hollow box(container) in the form of a staple, so that a suitable number of thesingle carriers may be used according to the size of the room to betreated.

The invention will be better understood by reference to the followingdetailed description in connection with the accompanying drawing,

The

showing by way of example and schematically some embodiments of anevaporating apparatus according to the invention, viz- Figure 1 is aperspective view of one embodiment of a device according to thisinvention.

Figure 2 is a perspective View of another embodiment.

Figure 3 is a cross-section through a third embodiment.

In the drawing, item a is the vessel of the evaporating device orapparatus into which the mixture, consisting of. 1000 parts of flowersof sulphur or sublimated sulphur, mixed in a molten state with 30 partsof pulverized sepia, is filled and then allowed to solidify. Wicks d,impregnated with solid spirit are provided in the mixture. The wicks maybe of a spiral, zigzag, wave or U-shape. The bottom or cover of thevessel consists of parts 12 (Figures 1 and 2) which when bent over layopen the contents of the vessel and serve as a support for the vessel a.The parts b are moreover provided with a cover 0 which is in the form ofa label fixed by an adhesive and capable of being torn off (Figure 1).Items 6 (Figure 3) are carriers, for instance plates, dishes or the likewhich are superposed and each provided with a certain quantity of thevermin destroyer. The carriers e are conveniently fitted with a handle fby means of which they can be taken off. Experiments with my novelvermin killer have shown that the vapours have good floatingcharacteristics and a very intensive vermin-destroying effect, so thatit is now rendered possible to treat also the upper parts of the roomvery intensively and to kill the vermin radically. When fresh air isadmitted, the vapours disappearv or volatilize immediately. It ismoreover essential that the evaporating device and the vermin killer arealways ready for use and that it is now possible to apply a quantity ofthe vermin killer which is adapted to the size of the room or space tobe treated. The defects hitherto existing are therefore avoided andmoreover the device is ready for shipment and sale without anyadditional steps.

The device according to the invention isused as follows:

The removable cover 0 is torn off. Then the parts b are bent over sothat the contents is laid open and the bent-over parts serve as asupport for the vessel a. Now the impregnated wicks are set alight andcause the vermin killer substance to burn. Hereby, the substance isevaporated and continues to evaporate until it has burnt out as far asthe next lower plate or carrier e. After removal of the carrier e thenext lower quantity or dose of the vermin killer 5 substance is readyfor use.

I claim:

A vermin killer agent, comprising a mixture of 1000 parts of flowers ofsulphur and 30 parts of pulverised sepia and at least one wickimpregnated with solid spirit and embodied in the said mixture.

ALFRED ESCH.

